Reticle library · Leupold
Drawn to scale from Leupold’s own specification sheet, and checked mark by mark by a person. This is the same geometry Harson Ballistics draws your holdover on.
Framed to about 40 MOA — the part of the reticle you aim with. This reticle carries marks out to 110 MOA; the rest sits beyond the edge of this drawing.
Drawn from Leupold & Stevens, Inc.’s published specification.
In the second focal plane the subtensions are only true at one magnification — check your manual for which, and dial there before you hold.
Leupold Illum. FireDot Twilight Hunter spec sheet (Illum._FireDot_Twilight_Hunter-10.7.2025.pdf, (c)2025), table row VX-3HD 1.5-5x: a = heavy line 6.3 / 19.0, b = thin line 0.8 / 2.4, c = thin opening 140.7 / 422.1 MOA (High-X / Low-X); this record uses High-X at 5x. Three heavy posts - left, right and bottom - each coming to a point; NO top post, the thin vertical runs to the field edge above centre. c is the FULL opening between the side post tips (its leaders sit on both tips). Red FireDot at centre; only the dot is illuminated. The dot's diameter is drawn but not dimensioned, so no size is claimed. Bottom post tip at c/2 and taper base at 0.6686 c are MEASURED from the vector artwork, which is to scale for this table (see verifiedNote). Post outer ends and the upper thin line stop at the sheet's field-of-view ring (1.043 c), capped here at 110 MOA (the ring would sit at 146.8), a display convention.
Verified 8 Oct 2026 against Illum._FireDot_Twilight_Hunter-10.7.2025.pdf page 1, by reading the vector outline with pymupdf (tools/build_leupold_gaps.py). The single drawing is to scale for EVERY row of the table: calibrating the drawing per row by its published c (tip-to-tip 434.50 pt) reproduces that row's published a and b to the table's rounding on all six rows (VX-6HD GEN 2 3-18x: a 1.61 vs 1.61, b 0.20 vs 0.2; VX-5HD GEN 2 3-15x: a 1.92 vs 1.92, b 0.24 vs 0.24; VX-3HD 1.5-5x: a 6.32 vs 6.3, b 0.79 vs 0.8; VX-3HD 3.5-10x: a 2.96 vs 3.0, b 0.37 vs 0.4; VX-3HD 4.5-14x: a 2.14 vs 2.1, b 0.27 vs 0.3; VX-FREEDOM 3-9x: a 3.27 vs 3.3, b 0.41 vs 0.4). That is what licenses measuring two features the table does not state: the bottom post tip sits at exactly 0.500 c like the side tips (measured 0.5000 / 0.5000 / 0.5000), and each post tapers from a point at the tip to full width a at 0.6686 c on all three arms. Checked: outline (three posts, no top post); no hashes, no numerals; centre FireDot alone at centre with the thin cross running through it; post inner ends pointed and facing centre on all three arms; thin vertical to the field edge above; letters a, b, c each mapped to geometry. Not published and not claimed: FireDot diameter. Display convention: posts stop at the drawn field-of-view ring.
Harson Ballistics draws this reticle at your magnification with your holdover marked on it, from your rifle, load and conditions. Works with no signal and no account.
Subtensions are published by the manufacturer and reproduced here for reference. Confirm your own dope on a range before you rely on any of it. Harson.ai is not affiliated with Leupold.